Derrick.



M. J. SASGEN.

DERRICK.

APPLICATION FILED JAN.30,-19 l2 1 ,1 30,766. I Patented Mar. 9, 1915.

3 SHEETS-SHEET 1.

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jfldmehf yaqgem W e B r M/fi? NORRIS PETERS c0 F'HOTO-LITHG., WASHINGTONv D. r:v

M. J. SASGEN.

DERRICK.

APPLICATION TIL ED JANL30, 1912- 1,1 30,766, Patented Mar. 9, 1915.

v3 SHEETS-SHEET 2.

THE NORRIS PETERS CO., FHOELITHOU WASHINGTON, D. C.

M. J. SASGEN.

DERRICK.

APPLICATION FILED JAN. 20, 1912.

1,130,766. v Patented Mir. 9, 1915.

s SKBETHHIEBT a.

. B J v I Maw 7 fg?" HE NORRIS PETERS 60.. PMOTO-LITHCJ.v WASHINGTON. D C

unitrnn STATES PATENT CFFIFQE- MICHAEL J. SASGEN, OF CHICAGO, ILLINOIS, ASSIGNOR T0 SASGEN DERRICK COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DERRICK.

Specification of Letters Patent.

Patented Mar. e, 1915!.

Application filed January 30, 1912. Serial No. 674,395.

To all whom it may concern Be it known that I, MICHAEL J. SASGEN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Derricks, of which the following is a specification.

The present invention relates to a derrick of the type used in building construction or similar work, usually for lifting the lighter kinds of material, and more particularly deals with that class of derricks'known as circle swing derricks, wherein the boom is mounted upon the mast in a manner to permit of its complete revolution about the mast.

The objects of the present invention are: to arrange the derricks structure so that a gear connection may be used in conjunction with the windless; to utilize a sufficiently broad drum upon which the cable is wound to accommodate enough cable to effect the hoisting of material to a considerable height; to arrange the drum and sheaves in proper relation to one another to permit of the even winding of the cable upon the drum; to provide an arrangement of pulleys whereby the cable, instead of being wound upon the drum of a hand operated Windlass, may be conducted to the ground and wound upon the drum of a hoisting engine; to provide means for securing a counterweight in position upon the boom so as to counterbalance the load being hoisted, whereby the hitherto necessary rigid securance of the derrick structure in position is not made necessary; to provide means for locking the boom against revolution about the mast, and to arrange this locking mechanism so that a portion of it can be displaced from position to permit of the removal of the boom from the mast; to provide a hinge connection between the mast and the base, and to provide foldable braces or supports between the mast and the base, whereby said mast and supports may be folded down upon the base, making a collapsible derrick structure; and to pro vide a single casting which will serve as a mounting for the Windlass mechanism and as a mounting for all of the members necessary to control the movements of said windlass mechanism.

The invention further consists in'the features of construction and in the combination of parts hereinafter described and claimed.

In the drawings, Figure 1 is an elevation of the derrick of the present invention in operative position; Fig. 2, a plan view of the parts shown in Fig. 1; Fig. 3, a detail in plan view of the Windlass mechanism; Fig. I, a section on line H of Fig. 8, looking inthe direction of the arrow; Fig. 5, a view similar to Fig. 1, showing the cable arranged to be connected to a hoisting engine and showing the weights removed; Fig. 6, a sectional detail of the brake mechanism for controlling the drum of the Windlass; Fig. 7, a detail plan view, partly in section, showing the means for locking the boom in position; Fig. 8, a view similar to Fig. 7, showing 'a portion of the locking means moved to displaced position to permit of the removal of the boom from the mast; Fig. 9, a view showing the mast and supports therefor in folded position upon the base member; Fig. 10, a detail plan view showing the mast in section and the base and supports between the base and mast in plan; and Fig. 11, a detail in perspective, showing the method of connecting the brake governing the Windlass drum to the actuating member for said brake.

The derrick illustrated in the drawings of the present invention is of the type more particularly adapted for use by builders to hoist light articles of building construction,

as, for instance, lumber, brick, mortar, etc.

The derrick is of a type which may be readily moved from place to place upon the structure being built, and is of a type which may be readily taken apart and moved from place to place, as is necessary. In derricks of this nature, it is highly important that 9 they be of a construction to be readily assembled and disassembled.

One of the principal features of the pres-. ent invention lies in the arrangement of the various parts of the derrick so that the entire derrick structure maybe readily dismantled and assembled as required.

In derricks of this nature, a considerable loss of time is occasioned through the placing of the fastening means for the derrick structure in position, such fastening means usually being in the nature of tie-bolts or analogous devices. By employing a counterweightupon the'opposite end of the mast from that to which the sheaves are hung,

the load being raised is counterbalanced so that the tendency of the derrick to tip forward under the strain of the load is overcome. A further difficulty in derricksof this nature has been experienced in raising loads to any great height, owing to the fact that the cable necessary for such raising op eration could not be accommodated upon the drum of the Windlass, due to the inability to properly wind the cable upon a sub-. stantially wide drum., This inability to properly wind the cable was due to the small distance separating the Windlass and the sheaves. By the peculiar arrangement of mast employed in the derrick of the present invention, 1 am enabled to use a drum sufficiently large to accommodate the amount of cable necessary to effect the hoisting to a substantial height; and suflicient distance is provided between the Windlass and sheaves to permit of the proper winding of such a cable upon the drum.

Referring now to the drawings,and particularly to Fig. 1, the derrick shown comprises a base 12, composed of timbers 13, extending at approximately right angles to one another, as will be seen more clearly from a study of Fig. 10. These timbers, and, in fact, the entire derrick structure, may be made of wood, metal, or any other suitable material desired. Positioned at the point of intersection of the timbers 13 and extending upwardly therefrom is a mast 14, which may be of any suitable size and configuration. Attached to the timbers 13 in the construction shown is a casting 15, which is formed with oppositely disposed, upwardly extending ears or lugs 16, which are positioned upon each side of the mast; and mounted in these lugs and extending through the mast is apin or bolt 17 The mast has a loose or swinging fit upon said bolt, so that the mast may be raised and lowered about said bolt as a pivotal center.

Suitably secured to the base and mast are supporting or brace members 18. These members have a hinged or swinging connection with the base of the mast, so that if the means for locking said supports either to the base or the mast are removed, said supports may be swung into position to lie either upon the mast or against the base, depending upon which locking member is removed, thus permitting said base, mast, and sup ports to be folded against one another, as

' shown in Fig. 9. In this figure, the means for locking the support to the mast have been removed and said support has been folded down to lie upon the base. But, obviously, by loosening the member locking the support to the base, said support may be folded against the mast and permit of the same result being accomplished, namely, folding the mast, braces, and base together,

as shown in Fig. 9.

The supporting members 18, when in the posltion shown in Fig. 1, prevent the mast from tipping backward. There is nothing,

or bar 19 for the mast. This pin or bar, as

shown more clearly in Fig. 1, is mounted within the ears 16 and extends across the front face of the mast, as clearly shown in Fig. 10. By arranging the mast, supports, and base so that they may be folded together, in the manner heretofore described, severalimportant results are accomplished: First, it expedites the setting up and taking down of the derrick structure; secondly, it permits the derrick to be readily packed for shipment from place to place; thirdly, it allows the derrick to be readily stored during periods of non-usage. And many other advantages arise from this feature which are not enumerated, but which will be readily recognized by those skilled in the art.

Mounted upon the mast 14: is a boom 20, comprising a series of parts 21, which, as will be clearly seen from a study of Fig. 1, are arranged in relation to one another so as to form a triangle. It will be further seen that the extremities of the boom lie upon opposite sides of the mast. This arrangement enables several novel results to be accomplished, amongst them being the feature of permitting a Windlass mechanism 22 to be positioned upon the inner end of the boom, whereby a substantial distance is provided between said Windlass mechanism and the sheave mechanism 23 which is located upon the outer end of the boom. This permits the user to utilize a relatively large and wide drum, permitting the winding of sufficient cable thereupon to allow the raising of a load to a substantial height, as has been explained heretofore. At this point it may be well to state some of the details of'construction of this Windlass mechanism. It is mounted within a supporting bracket 24:, formed of a single piece of metal which is secured to the body of the upper of the parts 21. Mounted in this bracket is a drum 25, provided with a gear wheel 26, which is adapted to mesh with avgear 27 of reduced size, mounted upon a shaft 28, this shaft being actuated usually by manual effort to effect the rotation of the drum and the windconnected to an ordinary band brake 32, the connection between the handle and brake being best shown in Fig.'l1. The end of the brake is slotted, as at 33, and the end of the handle is formed with a finger or protuberance 34, said finger passing through the opening or recess in the band; and a pin 35 serves to lock the parts together. By this arrangement, the brake can only be actuated through a movement of the handle in one direction, a movement in the other direction effecting no movement whatsoever of the brake member. A further advantage, as heretofore stated, of allowing the ends of the boom to extend upon each side of the mast is to permit of the securing of counterweights to the inner end of the mast. These counterweights are best shown in Fig. l, where they are indicated by the numeral 36. These weights may be of any suitable construction, but I prefer to use a weight constructed upon the order of a scale weight, whereby it may be readily and quickly removed or replaced. It is necessary to arrange the weights in conformity to the load being hoisted, and the extent of the load will vary according to the material, hence the desirability of arranging the weights so they can be readily and easily put on or taken off.

Means should be provided for locking the mast against revolution about the boom. Such means, in the form shown in the draw ing, comprise a split ring 37, composed of what may be termed a fixed section 38 and a movable section 39. The fixed and movable sections are held in proper position with respect to the mast through the medium of a locking bolt 40, and the sections are drawn into clamping or looking position against the mast through the medium of an eccentrically pivoted headed arm 41. This particular type of arm is well known to those versed in the art. The movable section 39, as will be seen more clearly from- Figs. 7 and 8, is hinged at 42, so that by loosening the nut which holds the locking bolt 40 in place,the section 39 may be swung to one side or displaced in the manner shown in Fig. 8, thus permitting the boom to be shifted with respect to the mast and moved into position whereby it may be readily lifted from its mounting or seat upon the mast. The split ring above re ferred to is attached to the boom and rests within the groove of a grooved collar 4% attached to the mast, this forms a bearing for the lower end of the boom to permit the boom to swing about the mast. The upper end of the boom is mounted by means of a sleeve 42 attached to the boom which finds a bearing in a pintle or stem 42 on the upper end of the mast thus providing an upper and lower mounting for the mast upon the boom. It is understood that the pintle429 is so arranged that the sleeve 42* can slide longitudinally thereof to permit the disassemblance of the mast from the boom when such is desired. 7

From the explanation heretofore given, it will be readily understood that the entire derrick structure may be taken down quickly and readily packed into a relatively small space, making it very convenient for handling or shipping; and it will be further understood :that the dismantling and erection of the derrick is a very simple and quick operation, and that the parts are so arranged with respect to one another, when the structure is dismantled, as to preclude the possibility of error in assembling the structure and placing it in operative 0on dition. Sometimes it may be desirable to extend the cable or pulley to a hoisting engine located below the derrick structure, rather than to the winding drum. If such a condition is present, the cable may be arranged in the manner shown in Fig. 5, in which it extends from a centrally located pulley 48 and through a central opening 44 in the mast of the derrick structure, and thence downwardly and to the winding drum of the hoisting engine.

I claim:

1. In a hand-operated circle swing builders derrick, the combination of a base, a mast secured to the base, a boom mounted upon the mast to swing completely about the mast, said boom being of triangularformation with the upper rail forming the long leg of the triangle, said upper rail being of a length to extend across the mast and lie upon opposite sides thereof, said upper rail being placed at an angle with the inner end located in a plane intermediate the ends of the mast, sheave mechanism on one end of the upper rail, geared Windlass mechanism on the other end of said rail, whereby the Windlass and sheave mechanisms are spaced a relatively long distance apart to permit of the use of a relatively wide Windlass, and means for locking the boom against revolution about the mast, substantially as described.

2. In a hand-operated circle swing builders derrick, the combination of a base, a mast secured to the base, a boom mounted on the mast to have complete revolution about the mast, said boom being of triangular formation with the upper rail forming the long leg of the triangle, said upper rail extending to opposite sides of the mast, sheave mechanism on one end of the upper rail, Windlass mechanism on the opposite end of said rail whereby the sheave and Windlass mechanisms are spaced a relatively long distance apart and the use of a relatively wide windlass permitted, a detachable bearing connection between the upper rail and upper end of the mast, and a detachable bearing con- I nection between the mast and the remaining rails of the boom, said connection being located approximately medially of the mast and constituting a means for controlling the revolution of the boom about the mast, substantially as described.

3. Ina circleswing derrick, the combina- 7 tion of a base, a mast fixedly secured to the base, a boom arranged to swing completely about the mast, said boom consisting of an upper rail, a rail extending from the inner end of the upper rail to the mast, a rail extending from the outer end of the upper rail to the mast, a sleeve and pin connection between the upper rail and the upper end of the mast, a ring located medially of the mast comprising a body portion provided with an outwardly extending flange, two straps each provided with a semi-circular portion adapted to embrace the body of said ring, a connection between said straps and the'inner end of that rail extending from the inner end of the upper rail, members extending from the inner end of that rail connectedto the outer end of the upper rail, a pin-like member connecting the straps and the extending members, and a locking meme ber mounted on said pin-like member for drawing and releasing said strap sections into and out of engagement with said ring, whereby the boom is locked against and permitted circular movement about the mast, substantially as described.

4. In a circle swing derrick, the combination of a base, a mast fixedly secured to the base, a boom arranged to swing completely about the mast, said boom consisting of an upper rail, a rail extending from the inner end of the upper rail to the mast, a rail extending from the outer end of the upper rail to the mast, a sleeve and pin connection be tween the upper rail and the upper end of the mast, a ring located medially of the mast comprising a body portion provided with an outwardly extending flange, two strapseach provided with a semi-circular portion adapted to embrace the body of said ring, a connection between said straps and the inner end of that rail extending from the inner end of the upper rail, members extending from the inner end of that rail connected to the outer end of the upper rail, a pin-like Copies of this patent may be obtained for member connecting the straps andextending members, and a locking member mounted on sa1d pin-like member for drawing and releasing said strap sections into and out of engagement with said ring, whereby the boom is locked against and permitted circular movement about the mast, one of said strap sections being hinged, whereby a releasable bearing is provided between the mast and boom, substantially as described.

5. In a circle swing derrick, the combination of a base, a mast fixedly secured to the base, a boom arranged to swing about the mast, said boom consisting of an upper rail, a rail extending from the outer end of the upper rail to themast, and a rail extending'from the inner end of the upper rail to tially as described.

6.1In a circle swing derrick, the combination of a base, a mast fixedly secured to the base, a boom arranged to swing about the said mast consisting of an upper rail, a rail extending from the inner end of the upper rail to the mast, a rail extending from the outer end of the upper rail of the mast, strap-like members extending from the adj acent ends of those rails connected to the upper rail, said strap-like members serving to detachably connect to the mast the rails with which'they are associated, the free ends of said straps overlapping, releasable locking means for joining together the free ends of the straps, and a detachable connection between the upper rail and mast, substantially as described.

MICHAEL J. SASGEN.

Witnesses:

WM. P. BOND, FRANCES M. Fnosr,

five cents each, by addressing the Commissioner of Patents.

WaahingtomD. G. 

